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nikhil04
@nikhil04
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Joined: Aug 19, 2020
Last seen: Jan 13, 2022
Topics: 0 / Replies: 1353
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Answer to: Assertion: The stromal thylakoids are rich in both PS I and PS II.

(d) If both the Assertion and Reason are incorrect. Explanation: The grana stacks of membranes are enriched in PS II and LHC (Light harvesting cen...

5 years ago
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Answer to: Assertion: D.C.M.U. is a photosynthetic inhibitor. Reason: D.C.M.U. inhibits a photolysis of water.

(a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion. Explanation: DCMU (Dichlorophenyl dimethyl urea) ...

5 years ago
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Answer to: Assertion: Amaranthus and sugarcane are called as Hatch & Slack plants.

(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion. Explanation: Amaranthus sp and sugarcane are...

5 years ago
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Answer to: Assertion: Dark reaction occurs only at night in the stroma of chloroplast.

(d) If both the Assertion and Reason are incorrect. Explanation: Dark reaction is also known as light independent phase. Unlike, light reaction, i...

5 years ago
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Answer to: Assertion: Dark reaction is purely enzymatic reaction. Reason: It occurs only in absence of light.

(e) If the Assertion is incorrect but the Reason is correct. Explanation: During photosynthesis, assimilatory power ATP and NADPH2 are produced wh...

5 years ago
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Answer to: Assertion: Photosynthetically C4 plants are less efficient than C3 plants.

(d) If both the Assertion and Reason are incorrect. Explanation: C4 plants are more efficient in picking up CO2 even when it is found in low conce...

5 years ago
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Answer to: Assertion: Under conditions of high light intensity and limited CO2 supply, photorespiration has a useful role in protecting the plants

(c) If the Assertion is correct but Reason is incorrect. Explanation: Photorespiration is the uptake of O2 and release of CO2 in light and results...

5 years ago
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Answer to: Assertion: The atmospheric concentration of CO2 at which photosynthesis just compensates

(c) If the Assertion is correct but Reason is incorrect. Explanation: Compensation point is that value or point in the light intensity and atmosph...

5 years ago
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Answer to: Assertion: C4 photosynthetic pathway is more efficient than the C3 pathway.

(a) If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion. Explanation: C4 pathway/Hatch and Slack pat...

5 years ago
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Answer to: Assertion: Cyclic pathway of photosynthesis first appeared in some eubacterial species.

(b) If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion. Explanation: Photosynthetic bacteria have a...

5 years ago
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Answer to: Assertion: Rhoeo leaves contain anthocyanin pigments in epidermal cells.

(c) If the Assertion is correct but Reason is incorrect. Explanation: Anthocyanin pigments only give colouration since the epidermal cells mainly ...

5 years ago
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Answer to: Assertion: Bacterial photosynthesis occurs by utilizing wavelength longer than 700 nm.

(b) If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion. Explanation: In bacteria, photosynthesis ut...

5 years ago
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Answer to: Assertion: Mitochondria helps in photosynthesis.

(d) If both the Assertion and Reason are incorrect. Explanation: Mitochondria helps in cellular respiration by transferring energy from organic co...

5 years ago
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Answer to: Assertion: C4 pathway of CO2 fixation is found in some tropical plants.

(b) If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion. Explanation: C4 pathway is an adaptation of...

5 years ago
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Answer to: Consider the following statements regarding photosynthesis.

(a) A and B are correct Explanation: During Calvin cycle, NADPH is oxidised to NADP. In a chlorophyll molecule, magnesium is present in the porphy...

5 years ago
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Answer to: The total requirement of ATP & NADPH for each molecule of CO2 fixed & reduced in photosynthesis in the Calvin cycle is

(c) 3 ATP & 2 NADPH Explanation: For every CO2 molecule entering the Calvin cycle, 3 molecules of ATP and 2 molecules of NADPH are required.

5 years ago
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Answer to: In the electron transport chain during terminal oxidation, the cytochrome, which donates electrons to O2 is

(c) Cyto-a3 Explanation: In ETS or respiratory chain, there are five cytochromes cyto-b, cyto-c1 , cyto-c, cytoa, cyto-a3. Cytochrome a3 is last c...

5 years ago
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Answer to: The family in which many plants are C4 type

(d) Graminae Explanation: C4 cycle occurs in 1500 species of 19 angiospermic families but most of the plants are monocots which belong to graminae...

5 years ago
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Answer to: Select the incorrect statement (a) C4 pathway for CO2 fixation were discovered by Hatch and Slack

(c) Addition of sodium carbonate in water retards photosynthetic rate in vallisneria Explanation: C4 pathway for CO2 fixation were discovered by H...

5 years ago
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